Cyclorphan
Encyclopedia
Cyclorphan is a hallucinogenic opioid
mixed agonist-antagonist related to levorphanol
discovered in the late 1960s. It is not marketed as an analgesic because of side effects related to its impact on the kappa opioid receptor
, but has found some use as a research chemical on and off since its discovery.
Opioid
An opioid is a psychoactive chemical that works by binding to opioid receptors, which are found principally in the central and peripheral nervous system and the gastrointestinal tract...
mixed agonist-antagonist related to levorphanol
Levorphanol
Levorphanol is an opioid medication used to treat severe pain. It is the levorotatory stereoisomer of the synthetic morphinan and a pure opioid agonist, first described in Germany in 1948 as an orally active morphine-like analgesic...
discovered in the late 1960s. It is not marketed as an analgesic because of side effects related to its impact on the kappa opioid receptor
Kappa Opioid receptor
The κ-opioid receptor is a protein that in humans is encoded by the OPRK1 gene. The κ-opioid receptor is one of five related receptors that bind opium-like compounds in the brain and are responsible for mediating the effects of these compounds...
, but has found some use as a research chemical on and off since its discovery.